A Shakespearean module for Roy, introducing type-safe,
compile-time variable and url interpolation. It is exactly the same as
Text.Julius, except that the template is first compiled to Javascript with
the system tool roy.

To use this module, roy must be installed on your system.

#{...} is the Shakespearean standard for variable interpolation, but
CoffeeScript already uses that sequence for string interpolation.
Therefore, it seems more future-proof to use %{...} for interpolation

Integration with Roy is a bit rough right now.
You can only perorm a shakespeare insertion inside a Roy string.
This should work well for urls and strings.
Otherwise you should stick your Haskell into Julius as a window variable,
and then retrieve it in your Roy code.